Google Wallet competitor Isis could go live in trial markets in a matter of weeks, according to a leaked internal document obtained by Android Central. The doc, sent our way by an anonymous tipster, says that beginning Oct. 22, customers in Salt Lake City, UT and Austin, TX will be able to use the Isis Mobile Wallet service on "Isis Ready devices" -- though no complete list of devices was provided.

The document goes on to state that payments through Isis "supporting banks'" credit cards will be supported, and that Isis users will get a complementary $10 balance on their pre-paid Isis Cash Card just for signing up and activating their wallet. That'll sound awfully familiar to anyone who's used a Google pre-paid card through Google Wallet.

Isis has some big names backing it, and whenever the eventual widespread launch comes, you can bet we'll be hearing much more about it.